1999 2500 cummings With normal driving , not towing ,temps are ok, but I can fluctuate the temp from just below the half way mark to just over the mark by hitting 1100d. on the pyrometera few times, and it rises in a matter of 20-30 seconds. while towing my 34' 5th whl, any grade of say a couple miles will send the temps over the hot mark, and into the red if I don't let off. I drive this thing like I have a egg under the pedal, o.d. locked out when required. It has gone to red a couple times when I could not stop where I was. Found a leaking injector on the last incident and replaced it, but it still runs hot. Also I've had radiator checked for cool spots, changed thermostat, fan clutch, coolant, rad. cap. I need some serious imput, Its dune season and I'm stuck at home. Please HELP. Thanks, One Hot Diesel
1999 DODGE2500, 410'S, BANKS TLC SYSTEM, 4" EXHAUST, ATS EXHAUST MANIFOLD, K&N FILTER, 285/75 TIRES

did u have the rad cleaned there bad for the vent tube to leak oil and it then the fan throws it into the rad and pluggs them up...the only thing u can do for that is get a good degreaser and pressure wash the rad...hope this helps..and id also loose the k&n filter...i hear from lots of guys that the diesels suck the oil right out of the filter and suck the dirt into the motor with it...

Keep me posted, I have a 98.5 24valve and it has been running hot lately as well.
Never got above 190 before, a few times I was doing 75-80 on the freeway temp
got into the red. Never did that before, even when I was pulling a loaded trailer through
the mountains pushing 1100-1200 degrees egt up some of the hills.

SYMPTOM/CONDITION:
Some vehicles may overheat or run hotter than normal. In some cases DTC P0217 - DECREASED ENGINE PERFORMANCE DUE TO ENGINE OVERHEAT may be set.

DIAGNOSIS:
If a vehicle is brought in for an overheat condition, check the ESN to determine if the engine falls within the build range. If it does not, continue with normal cooling system diagnostics listed in the appropriate service manual. If it does fall within the range, perform the Repair Procedure.

PARTS REQUIRED:
Qty Part No. Description
1 05015090AA Thermostat

REPAIR PROCEDURE:
This bulletin involves replacing the thermostat with a revised part.

Replace the thermostat with p/n 05015090AA following all service manual Cautions, Warnings, and procedures.
POLICY:
Reimbursable within the provisions of the warranty.

TIME ALLOWANCE:
Labor Op. No. Time
07-40-01-92 0.4 Hrs.

FAILURE CODE:
Code Description
P8 New Part

ENGINE IDENTIFICATION
ENGINE DATA PLATE
The engine data plate contains specific information that is helpful to servicing and obtaining parts for the engine. The data plate is located on the left side of the engine, affixed to the gear housing. Information that can be found on the data plate includes:

Date of Engine Manufacture
Engine Serial Number
Control Parts List (CPL)
Engine Rated Horsepower
Engine Firing Order
Engine Displacement
Valve Lash Reset Specifications
ENGINE SERIAL NUMBER
If the engine data plate is missing or not legible, the engine serial number is used for engine identification. The engine serial number is stamped on the right side of the block, on top of the oil cooler cavity Engine Serial Number Location

I see, let me know how that works out. I bought a new thermostat from Ausozone,
but I did not install it yet. What about low fuel pressure. I know my injector pump
is weak because my tuck cuts out when I get on it, my neighbors did the same thing
and he took his to the dealer and he needed a new injector pump. I wonder if that
could cause a lean condition and cause it to run hot under load.

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